PUCCH Transmission Profiles for Reliable 5G NR Control Signaling
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Solution Overview
Problem
Current processing and transmission mechanisms in 5G wireless systems, such as New Radio (NR), are less efficient for use cases like enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (URLLC), and massive machine type communication (mMTC), particularly in managing uplink control information (UCI) and downlink control information (DCI) transmission.
Innovation Solution
A wireless transmit/receive unit (WTRU) determines a transmission profile for uplink control information (UCI) based on factors like logical channel identity, DCI fields, bandwidth part (BWP), and properties of physical downlink control channel (PDCCH) transmissions, and transmits UCI over a physical uplink control channel (PUCCH) with specific characteristics, including coding parameters, transmission power, and resource allocation, using CORESET and RNTI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current processing and transmission mechanisms are used in 5G systems, then basic communication functionality is maintained, but efficiency and reliability of control signaling deteriorates for diverse use cases
Solution Approach 1:
The patent implements dynamic transmission profiles that adapt to different use cases (eMBB, URLLC, mMTC) by adjusting coding parameters, transmission power, and resource allocation based on service requirements and channel conditions, resolving the contradiction between reliability and efficiency through context-aware dynamic configuration
Solution Approach 2:
The patent changes key transmission parameters including coding rate, modulation scheme, transmission power level, and resource block allocation based on the determined transmission profile, enabling optimized control signaling for different service types while maintaining overall system efficiency
2Reliability
If generic UCI transmission is used, then implementation complexity is reduced, but transmission reliability and efficiency for specific use cases deteriorates
Solution Approach 1:
The patent applies different transmission characteristics (coding parameters, power levels, resource allocation) to different UCI transmissions based on their specific requirements determined by logical channel identity and PDCCH properties, achieving use case-optimized reliability without requiring complex manual configuration for each scenario
Solution Approach 2:
The patent performs preliminary determination of transmission profiles based on logical channel identity and PDCCH transmission properties before actual UCI transmission, pre-configuring optimal parameters for each use case to ensure reliable transmission while automating the complexity management process
Data Source
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AI summary
Systems, methods, and instrumentalities are disclosed for reliable control signaling, for example, in New Radio (NR). A receiver in a wireless transmit/receive unit (WTRU) may receive one or more physical downlink control channel (PDCCH) transmissions comprising downlink control information (DCI). The WTRU may determine a transmission profile associated with an uplink control information (UCI). Based on the transmission profile, the WTRU may determine one or more transmission characteristics associated with the transmission of the UCI. The WTRU may transmit the UCI over a physical uplink control channel (PUCCH). The UCI may be transmitted using transmission characteristics determined by the WTRU. The WTRU may transmit the UCI based on at least one of a control resource set (CORESET), a search space, or a radio network temporary identifier (RNTI). The WTRU may determine a transmission profile differently based on what the UCI may comprise.